Establishing Reliability and Validity of the ScanCourse
Authors: Paige Lund, Caitlyn Moir, Dr. Ben Mortenson, & Lisa Kristalovich
Background. The ScanCourse, a component of the Brain Injury Visual Assessment Battery for Adults (biVABA), examines a client’s visual scanning ability while ambulating (Warren, 2006). The ScanCourse is commonly used in occupational therapy practice. However, the psychometric properties of this assessment have not been examined. Purpose. To assess the interrater reliability, test-retest reliability and construct validity of the ScanCourse for use with clients with neurological impairments. Methods. Approximately 40 patients with conditions such as stroke, Parkinson’s disease, or brain injury, who are able to mobilize independently, and communicate either verbally or through pointing will partake in the study. To assess test-retest reliability, the ScanCourse will be administered twice within a 2 week period. To assess interrater reliability, a second rater will be present on one of these sessions. To evaluate construct validity, the results of the ScanCourse will be compared to results of the Bells Test and Trails A & B. Findings. The ScanCourse was found to have excellent interrater and test-retest reliability, and to be significantly correlated to Trails A & B, therefore its use in practice with this population is supported. Implications. This study will inform future research on the predictive validity of the ScanCourse for driving capability.
Warren, M. (2006). Brain Injury Visual Assessment Battery for Adults Test Manual. Birmingham, AL: visAbilities Rehab Services.